40861956418 has 8 divisors (see below), whose sum is σ = 62297737020. Its totient is φ = 20096044080.

The previous prime is 40861956407. The next prime is 40861956419. The reversal of 40861956418 is 81465916804.

40861956418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 25858891249 + 15003065169 = 160807^2 + 122487^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (40861956419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167466913 + ... + 167467156.

Almost surely, 2^40861956418 is an apocalyptic number.

40861956418 is a deficient number, since it is larger than the sum of its proper divisors (21435780602).

40861956418 is a wasteful number, since it uses less digits than its factorization.

40861956418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334934132.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The spelling of 40861956418 in words is "forty billion, eight hundred sixty-one million, nine hundred fifty-six thousand, four hundred eighteen".